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CVE Record

CVE-2024-45019: net/mlx5e: Take state lock during tx timeout reporter

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Take state lock during tx timeout reporter mlx5e_safe_reopen_channels() requires the state lock taken. The referenced changed in the Fixes tag removed the lock to fix another issue. This patch adds it back but at a later point (when calling mlx5e_safe_reopen_channels()) to avoid the deadlock referenced in the Fixes tag.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel driver flaw in the mlx5e network driver’s transmit timeout recovery path. The public record says a required state lock was missing and was restored. Business risk is mainly operational reliability on affected Linux systems using this driver, not a confirmed internet-wide exploitation issue.

Executive priority

Treat as a targeted kernel maintenance item for Linux infrastructure with mlx5e networking. Prioritize patching production hosts that depend on those adapters, but do not escalate as an emergency without additional exploit or impact evidence.

Technical view

The issue affects net/mlx5e tx timeout reporter handling. mlx5e_safe_reopen_channels() requires the state lock; an earlier fix removed the lock to avoid another deadlock, and this fix reacquires it at the narrower call point. CVSS, CWE, and detailed exploitability are not provided.

Likely exposure

Likely exposure is limited to affected Linux kernel builds on systems using the mlx5e Ethernet driver, commonly associated with Mellanox/NVIDIA adapters. Systems without this driver or hardware are less likely exposed. Confirm against distribution kernel advisories because vendor backports may change version appearance.

Exploitation context

The bundle does not show CISA KEV listing, active exploitation, public exploit availability, or attacker prerequisites. The available evidence describes a kernel driver locking bug and upstream stable fixes, but not a demonstrated exploitation path or severity score.

Researcher notes

Evidence is sparse: no CVSS, CWE, exploit narrative, or attack preconditions are supplied. The root cause is locking discipline around mlx5e_safe_reopen_channels() during tx timeout recovery. Focus validation on affected kernel lineage, driver presence, and vendor backport status.

Mitigation direction

  • Update affected Linux kernels through the normal distribution vendor channel.
  • Prioritize hosts that use or load the mlx5e network driver.
  • Confirm the updated kernel includes the referenced upstream stable fixes.
  • Review the Debian LTS advisory if using Debian LTS kernels.
  • If patch timing is unclear, check current vendor guidance before choosing workarounds.

Validation and detection

  • Inventory Linux kernel versions on hosts using mlx5e adapters.
  • Check whether the mlx5e driver is loaded on each candidate host.
  • Compare deployed kernels with distribution advisories and fixed stable commits.
  • Review kernel logs for mlx5e transmit timeout or channel reopen instability.
  • After updating, verify the host booted into the corrected kernel.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2024-45019 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
2ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux514232495aa523641febaa58b687fe6df1cd0b73, 8ce3d969348a7c7fa3469588eb1319f9f3cc0eaa, eab0da38912ebdad922ed0388209f7eb0a5163cd, eab0da38912ebdad922ed0388209f7eb0a5163cd, 6.1.69, 6.6.8unaffected
LinuxLinux6.7, 0, 6.1.107, 6.6.48, 6.10.7, 6.11affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.